IndividualActive
Isaac Greenfield
NPI 1831491406 · Mental Health Counselor · Brooklyn, NY
Isaac Greenfield is a Mental Health Counselor provider in Brooklyn, NY (NPI 1831491406).
Provider details
- NPI number
- 1831491406
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(76/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
425 Kings Hwy
Brooklyn, NY 11223-1629
Phone: (718) 787-1100
Fax: (212) 792-6058
Street-level locationGet directions
Mailing address
25 Yeshiva Ln
Staten Island, NY 10309-2831
Registry dates
- Enumerated
- 2010-12-02
- Last updated
- 2010-12-02
Frequently asked questions
- What is Isaac Greenfield's NPI number?
- Isaac Greenfield's National Provider Identifier (NPI) is 1831491406, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isaac Greenfield's specialty?
- Isaac Greenfield is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Isaac Greenfield located?
- Isaac Greenfield's practice location on file with NPPES is 425 Kings Hwy, Brooklyn, NY 11223-1629.
- What is Isaac Greenfield's phone number?
- The practice phone number listed in the NPPES registry for Isaac Greenfield is (718) 787-1100.
- Is Isaac Greenfield's NPI active?
- Yes — Isaac Greenfield's NPI (1831491406) is active in the NPPES registry as of the last update on 2010-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.